English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

Nitrogen hydrides, including ammonia (NH3), hydrazine (N2H4), hydrazoic acid(HN3) and etc, are compounds of great fundamental and applied importance. Theirhigh-pressure behavior is important because of their abundance in giant planetsand because of the hopes of discoverying high-energy-density materials. Here,we have performed a systematic investi- gation on the structural stability ofN-H system in a pressure range up to 800 GPa through evolutionary structureprediction simulations. Surprisingly, we found that high pressure stabilizes aseries of previously unreported compounds with peculiar structural andelectronic properties, such as the N4H, N3H, N2H and NH phases composed ofnitrogen backbones, the N9H4 phase containing two dimensional metallic nitrogenplanes and novel N8H, NH2, N3H7, NH4 and NH5 molecular phases. Another surpriseis that NH3 becomes thermodynamically unstable above ~460 GPa. We found thathigh-pressure chemistry is much more diverse that hydrocarbon chemistry atnormal conditions, leading to expectations that N-H-O and N-H-O-S systems underpressure are likely to possess richer chemistry than the known organicchemistry. This, in turn, opens a possibility of nitrogen-based life at highpressure. The predicted phase diagram of the N-H system also provides areference for synthesis of high-energy-density materials.

Diverse Chemistry of Stable Hydronitrogens, and Implications for Planetary and Materials Sciences